I'm that clingy girlfriend

Hey ladies. Have y'all ever been this girl? The super clingy girlfriend? I know I'm doing it, but I can't seem to stop. Maybe I can't get past my own insecurities, I don't know... But it's making my bf of 2 1/2 years distant. I can't blame him, I'm pushing him in that direction, but it still sucks. Because the more I push him, the more he's distant, the more clingy I feel. Vicious cycle. It's only gotten bad these past few months when he got a new job and moved somewhere new. We've always been 1 or 2 hrs apart, but it's a little harder with his job now. I don't want to lose him because I love him so much and he is such a special part of my life, but I'm having a hard time just being not clingy I guess. He is such a kind and wonderful man, and I want to be the best woman I can be for him. Any advice? Thank you!